Coupling for hose, pipe, and the like



H. R. WALSH COUPLING FOR HOSE, PIPE, AND THE LIKE Filed March 9. 1922 Patented Fe, 5, 192% R. WALSH, OF SAN PEDRO, CALIFORNIA, ASSIGNOR TO WALSH AUTOMATIC COUPLING COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPGRATION OF CALI- EUREKA.

s ucamnmea with 9, 1922. Serial no. team.

To all whom ztnnay concern:

Be it known that-I, HARRY R. WALSH, a citizen of the United States, residing at San Pedro, in the county of Los Angeles and a State of California, have invented new and useful Improvements in Coupling for Hose, Pipe, and the like, of which the following is a specification.

My invention relates to a coupling for 19 hose, pipe and the likeyth'e principal objects of my invention being to provide a pipe or hose coupling that is quick-acting when the parts thereof are being connected or disconnected; to provide a coupling that is of relatively simple and practicalconstruction, capable of being easily and cheaply pro duced; to provide the coupling with simple and effic-ient, means for locking the principal part of the coupling to each other when in coupled condition; and, further, to provide a coupling of the character described that is of strong, durable and compact construction. With the foregoing and o'ther objects in view, my invention consists in the features of construction and combination and arrangement of parts hereinafter more fully described and claimed, reference being had to the accompanying drawings, in which:

Figure 1 is a top plan View of a coupling of my improved construction;

Figure 2 is a longitudinal section taken onthe line 2-2 of Figure 1;

' Figure 3 i a. cross section taken on the line 3-3 of Figure 2; a Figure 4: is a cross section taken on the line 4-4 of Figure 2;

Figure 5 is a cross section taken on the line 5-5 of Figure 2;

.igure 6 is a perspective view of the male member ofthe coupling. 7

Referring by numerals to the accompany ing drawings, which illustrate a practical em: bodiment of my invention, 10 designates the main body portion of the male member of the coupling, which body is substantially tubular in form and provided at one end with an tubular member 21, and when the minal portionl8. Formed on the tubular extension adjacentto the 'body 10 is a single spirally disposed thread 19 that extends substantially once around the circumference of said extension, and the pitch of said thread 18 approximately 20 to 25 relative to the axis of the tubular extension 16 and body 10. Formed in the outerface of this thread 19 and preferably adjacent to its end is a series of notches 20. a

The female part of the coupling comprises a tubular body 21, one end of which is internally threaded as designated by 22 in order A to receive a nipple or pipe section 23, which latter may be seated in the end of a flexible tube'or hose. The greater portionof the open ing through member. 21 is of such adiameter as to snugly receive the tubular extension 16,

and formed in said member 21 adjacent to t he end that engages against the main body. portion of member 10 1s a spirally disposed groove 24 that receives the thread 19 when theparts are properly coupled.

Formed wi the tubular member 21 and adjacent the inner end of thread 22 is an annular flange 25 that is concentrically arranged with respect to the axis of said artsof the cou ling are properly assemb ed this flange fits snugly within the reamed out portion 17 at the end of tubular extension 16. Formed a-roundthe annular flange 25 adjacent to the point where the same unites with thebody of member 21 is an annular recess 26, in which is seated a compressible packing ring or gasket 27, which latter is engaged by the rounded end of the terminal portion 18 of tubular extension 16. Formed in the outer face of tubular member 21 and at a point intermediate its ends is a recess 28 that is surrounded by a slightly raised head 29, and extending lengthwise of its said tubular member from said recess to an opening 30 that is formed through the wall of member 21 is a shallow channel 31. Recess 3O communicates with the central portion of the spirally disposed groove 24; that receives the thread 19, and formed in the periphery of member 21 and intersecting the outer portion of aperture 30 is a shallow groove or channel 32. Occupying channel 31 and extending across the recess 28 is a protected latching member 33, the rear end of which occupies a portion of the recess that rests beneath the bead 20, and formed on the under side of the intermediate portion is a pivot in the form of an integral and imperforate depending lug 3-1 that bears in a corresponding recess that is formed in the bottom of channel 31. The forward end of this latching member is provided with a depending head. 35 that extends downwardly through aperture 30, and said head is adapted to engage in the notches between the teeth 20 on thread 19. Occupying the groove 32 is a ring-shaped spring 36, tending to force said head inwardly into position between the notches 20. The rear portion of the latching member 33 or that portion within the recess 28 is widened slightly in order to form a substantially circular plate or button 37 that may be readily engaged by the thumb or fin er when it is desired to depress the rear en of said protected latching member to permit the parts of the coup lin to be disconnected.

I n assembling the parts of my improved coupling, the extension 16 on body 10 is inserted in the tubular member 21 until the forward end of thread 19 engages in the outer ends of the spirally disposed groove 24, and by rotating either art of the coupling approximately one hal f turn the thread 19 enters the spirally disposed groove 24, thereby drawing the two parts of the coupling into engagement with each other or until the end of tubula member 21 engages against the shoulder between body 10 and its extension 16. As the parts of the coupling are thus drawn, the end of the terminal portion 18 of member 16 bears against the packing ring or gasket 27, consequently producing a fluid pressure tight joint between the coupling members. As the parts of the coupling are thus assembled, the head 35 on the forward end of member 33 will ride past certain of the teeth on thread coupling, it is only necessary to depress the rear end of member 33 so as-to lift the head 35 and then reversely rotate the parts so as to entirely withdraw thread 19 from the groove 24.

A coupling of my improved construction is comparatively simple, may be easily and cheaply produced, may be .quickly coupled or uncoupled, and when properly coupled is effectively locked against disconnection.

It will be noted that in my improved coupling the packing ring or gasket 27 is located in the annular recess 26 beneath the flange 25, and that when the annular portion 18 of tubular extension 16 is positioned around the annular member 25 said gasket is wholly protected from the fluid that passes through the coupling. Obviously such arrangement materially lengthens the life or period of service of the gasket, and an effective leak-proof joint is provided between the parts of the coupling. Further, such arrangement prevents the gasket from being blown out under high pressures, and it also prevents the gasket from being accidentally disengaged and lost from the member in which it is seated when the parts of the coupling are disconnected.

The parts of the coupling are constructed so that when they are tightly connected the end of the tubular extension 16 com resses the gasket to a certain extent, an compression efiectually prevents leakage of any air or fluid pressure past said gasket.

Another important feature of m invention is the formation of the threa 19, the same being in the form of a flat thread or a thread having a fiat outer face, such construction providing the desired strength and stability of the entire structure. 7 C

It will be understood that minor changes in the size, form and construction of my improved coupling may be made and substituted for those herein shown and described without departing from the spirit gagement with the other member, the thread et'ween said members being notched, and a latching member arranged in an aperture extending lengthwise of one of said tubular members adapted to engage the notches in said thread to lock the parts of the coupling against disconnection, said latching means being pivoted upon an imperforate lug and secured by a ring.

2. In a hose coupling, a pair of substantially tubular members, a portion of one of which is inserted within the other, a packing ring arranged within the receiving memberwand against which the end of the such meaoaa inserted portion of the member engages when the parts are properly connected, the parts of the coupling having threaded engagement with each other and. means comprisin a ring-shaped spr ng and a latch move is thereby for locking the parts of the coupling against reverse rota movement.

3. In a hose coup ing, a pair of tubular members, a tubular extension on one of said members, which tubular extension is adapted to enter the other member, there being a fiat thread formed on said tubular extension and adapted to engage in a spirally disposed groove formed in the othermemher, and means comprising a ring-shaped spring and a latch for locking said tubular I members together.

4. In a hose coupling, a pair of tubular members, a tubular extension on-one of said members, which tubular extension is adapted to enter the other member, a fiat thread formed on said tubular extension and adapted to engage in a spirally disposed groove formed in the other member, and

means comprising a ring-shaped spring and a latch for engaging said thread to lock the parts of the couplin to each other.

5. In a hose coup ing, a pair of tubular members havin threaded engagement with each other, which threaded engagement is such that the parts may be quick y connected or disconnected, and means comprising a ring-shaped sprin and a latch for positively locking sai members to each other when connected. 1

6. In a hose coupling comprisin two in terfitting members, a male mem er provided with an upstanding thread having notches therein, a corresponding female member provided with a female thread in the form of a groove cut in the interior thereof, an aperture extending from the exterior of; said member. into said groove, and protected disengageable means positioned in a recess and extending throu b said aperture for locking said male and emale members, in engagement, said disengageable means comprising a longitudinally mounted lever pivoted upon arr-integral 11nperforate lug and secured by resilient means.

7. In a hose coupling comprising two intel-fitting members, a male member provided with an upstanding thread having notches therein, a correspondin female member provided with a female it hread in'the form of a groove cut in the interior thereof, an aperture extending from the exterior of said member into said groove, and protected disengageable means positioned in a recess and extending through said aperture for locking said male and female members in engagement, said female member being also provided with an inner flange, with an annular chamber at the base of said flange, and with a gasket in said chamber so placed as .to be engaged by said male member, said disengageable means comprising a longitudinally mounted lever pivoted upon an integral imperforate lug and secured by resilient means.

8. in a hose coupling comprising a female member rovided with an internal thread and a ma e member corresponding, an inner annular flange of a radial depth greater than the thickness of the flange of the other memher on said female member, there being a chamber at the base of said annular flange,

and a gasket in said chamber so placed as to be engaged by a relatively thin annular terminal portion upon said male member.

9. A. hose coupllng comprisin male and female members, to one of whici a hose is attached, the last mentioned member being HARRY R. WALSH. 

